io.github.ChiR24/unreal-engine-mcp

{
  "_meta": {
    "io.modelcontextprotocol.registry/official": {
      "status": "active",
      "isLatest": true,
      "updatedAt": "2026-10-16T15:25:13.582132Z",
      "publishedAt": "2026-10-16T15:25:13.582132Z",
      "statusChangedAt": "2026-10-16T15:25:13.582132Z"
    }
  },
  "server": {
    "name": "io.github.ChiR24/unreal-engine-mcp",
    "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
    "version": "0.6.0-beta-f",
    "packages": [
      {
        "version": "0.6.0-beta-f",
        "transport": {
          "type": "stdio"
        },
        "identifier": "unreal-engine-mcp-server",
        "registryType": "npm",
        "registryBaseUrl": "https://registry.npmjs.org",
        "environmentVariables": [
          {
            "name": "UE_PROJECT_PATH",
            "format": "filepath",
            "isRequired": true,
            "description": "Your Unreal project folder or its .uproject file. The server reads the capability token from <project>/Saved/MCP/capability-token and the WebSocket port from the project settings.",
            "placeholder": "C:/Users/YourName/Documents/Unreal Projects/MyGame"
          },
          {
            "name": "MCP_AUTOMATION_CAPABILITY_TOKEN",
            "isSecret": true,
            "description": "Capability token to present to the editor. Only needed when the server cannot read the project folder, for example over LAN."
          },
          {
            "name": "MCP_AUTOMATION_PORT",
            "format": "number",
            "description": "Editor WebSocket port. Default: the first Listen Ports entry in the project settings, else 8090.",
            "placeholder": "8090"
          },
          {
            "name": "MCP_AUTOMATION_HOST",
            "default": "127.0.0.1",
            "description": "Editor host to connect to. A LAN address also needs MCP_AUTOMATION_ALLOW_NON_LOOPBACK=true and Allow Non Loopback in the plugin settings."
          },
          {
            "name": "MCP_AUTOMATION_ALLOW_NON_LOOPBACK",
            "format": "boolean",
            "default": "false",
            "description": "SECURITY: allow a non-loopback MCP_AUTOMATION_HOST. Enable only on a trusted network."
          },
          {
            "name": "MCP_AUTOMATION_USE_TLS",
            "format": "boolean",
            "default": "false",
            "description": "Connect with wss:// instead of ws://."
          },
          {
            "name": "MCP_ADDITIONAL_PATH_PREFIXES",
            "description": "Extra content roots to allow besides /Game, /Engine, /Script, /Temp and /Niagara, comma-separated. Example: /MyPluginContent/"
          },
          {
            "name": "MCP_CONNECTION_TIMEOUT_MS",
            "format": "number",
            "default": "5000",
            "description": "How long to wait for the editor connection, in milliseconds."
          },
          {
            "name": "MCP_REQUEST_TIMEOUT_MS",
            "format": "number",
            "description": "Overrides every per-capability request timeout, in milliseconds. Leave unset: each capability gets a budget that fits its cost."
          },
          {
            "name": "MCP_AUTOMATION_MAX_MESSAGES_PER_MINUTE",
            "format": "number",
            "default": "600",
            "description": "Inbound messages per minute from the editor before the server disconnects."
          },
          {
            "name": "LOG_LEVEL",
            "choices": [
              "debug",
              "info",
              "warn",
              "error"
            ],
            "default": "info",
            "description": "Log level. Logs go to stderr."
          }
        ]
      }
    ],
    "repository": {
      "url": "https://github.com/ChiR24/Unreal_mcp.git",
      "source": "github"
    },
    "description": "EngineWire: drive the Unreal Editor (UE 5.0-5.8): levels, Blueprints, UI, materials, VFX and more."
  }
}